CN107208716B - The hydraulic pressure control device of distributing means for power supply - Google Patents

The hydraulic pressure control device of distributing means for power supply Download PDF

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Publication number
CN107208716B
CN107208716B CN201680010148.0A CN201680010148A CN107208716B CN 107208716 B CN107208716 B CN 107208716B CN 201680010148 A CN201680010148 A CN 201680010148A CN 107208716 B CN107208716 B CN 107208716B
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China
Prior art keywords
value
clutch
torque
oil pressure
oil
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CN201680010148.0A
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Chinese (zh)
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CN107208716A (en
Inventor
吉田友马
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/119—Conjoint control of vehicle sub-units of different type or different function including control of all-wheel-driveline means, e.g. transfer gears or clutches for dividing torque between front and rear axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
    • B60W30/1843—Overheating of driveline components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F16D48/066—Control of fluid pressure, e.g. using an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
    • B60K2023/0816—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch for varying front-rear torque distribution with a central differential
    • B60K2023/0833—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch for varying front-rear torque distribution with a central differential for adding torque to the rear wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K2023/085—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles automatically actuated
    • B60K2023/0866—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles automatically actuated with hydraulic means only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0291—Clutch temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2720/00—Output or target parameters relating to overall vehicle dynamics
    • B60W2720/40—Torque distribution
    • B60W2720/403—Torque distribution between front and rear axle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0287—Hydraulic circuits combining clutch actuation and other hydraulic systems
    • F16D2048/0293—Hydraulic circuits combining clutch and transmission actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10425—Differential clutch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • F16D2500/10406—Clutch position
    • F16D2500/10431—4WD Clutch dividing power between the front and the rear axle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/304—Signal inputs from the clutch
    • F16D2500/30404—Clutch temperature
    • F16D2500/30405—Estimated clutch temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/304—Signal inputs from the clutch
    • F16D2500/3041—Signal inputs from the clutch from the input shaft
    • F16D2500/30415—Speed of the input shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/304—Signal inputs from the clutch
    • F16D2500/3042—Signal inputs from the clutch from the output shaft
    • F16D2500/30426—Speed of the output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/308—Signal inputs from the transmission
    • F16D2500/3081—Signal inputs from the transmission from the input shaft
    • F16D2500/30816—Speed of the input shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/308—Signal inputs from the transmission
    • F16D2500/3082—Signal inputs from the transmission from the output shaft
    • F16D2500/30825—Speed of the output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/31—Signal inputs from the vehicle
    • F16D2500/3108—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/51—Relating safety
    • F16D2500/5104—Preventing failures
    • F16D2500/5106—Overheat protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/70408—Torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Abstract

Realize clutch protection device with not damaging torque transmission performance as far as possible is provided.Oil pressure corresponding with the command torque is supplied to oil pressure type clutch according to driving condition determine instruction torque by the oil pressure type clutch that dynamic distribution is configured between power source and secondary driving wheel.Estimate the surface temperature of (detection) described clutch, when the input of the clutch, output shaft rotational speed difference more than defined threshold value and described instruction torque it is defined value it is above when, generate the inhibiting value for inhibiting the command torque, and controlled, so that increasing the inhibiting value with the rising of the surface temperature of the clutch.

Description

The hydraulic pressure control device of distributing means for power supply
Technical field
The present invention relates to a kind of hydraulic pressure control device, the power in ultromotivity in future source distributes to the 1st driving wheel (main drive Driving wheel) and the 2nd driving wheel (secondary driving wheel) four-wheel drive vehicle distributing means for power supply in, control for generate power distribution The oil pressure of the activating pressure of the more plate friction-type make and break devices (oil pressure type clutch) of oil pressure actuated possessed by device.
Background technique
In the past, there are a kind of four-wheel drive vehicles with distributing means for power supply, which is used for will be by sending out The power that the power sources such as motivation generate distributes to main drive wheel and secondary driving wheel.In this four-wheel drive vehicle, such as preceding Wheel be in the case that main drive wheel, rear-wheel are secondary driving wheel, by the power of power source generation via drive axle and front differential mechanism And it is passed to front-wheel, and the distributing means for power supply with multi-plate clutch is passed to via transmission shaft.Also, pass through From hydraulic pressure control device to the working oil of distributing means for power supply supply authorized pressure, to control the engagement pressure of distributing means for power supply Power.The power of power source is transmitted by defined distribution ratio to rear-wheel as a result,.
As the hydraulic pressure control device for controlling the oil pressure supplied to the multi-plate clutch of distributing means for power supply, there is example Hydraulic pressure control device as shown in Patent Documents 1 and 2.Hydraulic pressure control device shown in patent document 1,2 has to more for pushing The electric oil pump of hydraulic chamber's supply working oil of plate clutch, will be connected by oil pressure supply path between electric oil pump and hydraulic chamber It picks up and, control the revolving speed of electrodynamic pump, so that electrodynamic pump pumps out the requirement work pressure that value is oil clutch.In patent document In hydraulic pressure control device described in 2, the motor driven of electrodynamic pump is controlled, so that generating corresponding with the distribution ratio of driving force oily Pressure.But in the hydraulic pressure control device of patent document 1,2, supplied by then passing through the driving of electrodynamic pump to oil clutch The structure of necessary oil pressure is answered, therefore electric oil pump must be made to operate always in oil clutch engagement.Therefore, if used Brush motor is as driving the motor of electric oil pump, being then difficult to ensure the durability (brush wear) of motor.
It proposes to have used the enclosed oil pressure cntrol dress of the oil pressure of motor and solenoid valve in view of this point, in patent document 3 It sets.In the enclosed hydraulic pressure control device of the oil pressure, for from by motor-driven oil pump to driving force distribution from In the oil pressure path of piston chamber's supply working oil of clutch, the working oil for closing working oil is set and closes valve and for opening The solenoid valve (switch valve) for closing the oil circuit between working oil closing valve and piston chamber passes through pass when pressurizeing to the piston chamber It closes the solenoid valve and periodically drives oil pump to be controlled by the motor, so that the piston chamber reaches instruction oil pressure, it is right When the piston chamber depressurizes, controlled by forbidding the driving of the oil pump and periodically switching the solenoid valve, so that The piston chamber reaches instruction oil pressure.In this way, the only driving motor in pressurization, the not driving motor in decompression, from there through reduction The working frequency of motor realizes the raising of durability.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2004-19768 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2001-206092 bulletin
Patent document 3: No. 5607240 bulletins of Japanese Patent Publication No.
In any type of hydraulic pressure control device, in order to protect clutch, the input of the clutch, output shaft revolving speed In the case that difference is more than defined feasible value, in order to inhibit excessive torque demand, controlled, so that by the clutch The value of command torque is limited in defined inhibiting value.In this case, generally considering institutional deviation and by the command torque Inhibiting value is set to the value lower than the institutional limiting value of oil hydraulic system.Moreover, in this case, the surface temperature of clutch Degree also mostly rise, it is thus possible to generate following vicious circle: the transmitting torque of clutch because temperature rise due to reduce, to The driving torque of secondary driving wheel transmitting exceedingly reduces.
Summary of the invention
The present invention is completed in view of above-mentioned aspect, and it is an object of the present invention to provide a kind of hydraulic pressure control device, the oil pressure cntrol Device realizes the protection of clutch in which can not damage torque transmission performance as far as possible.
The present invention is the hydraulic pressure control device of the distributing means for power supply in vehicle, which is characterized in that the vehicle includes dynamic The power of power transmission path, ultromotivity in future source is transmitted to the 1st driving wheel and the 2nd driving wheel；Driving force distribution device, packet Include oil pressure actuated more plate frictions of the configuration between the power source and the 2nd driving wheel in the power transfer path The disconnecting unit of type；And temperature acquisition unit, obtain the surface temperature of more plates of the disconnecting unit, the oil pressure cntrol Device has control unit, and control unit acquirement wants demanded driving force transmission capacity to the distributing means for power supply, controlled, made The corresponding oil pressure of demanded driving force transmission capacity will be wanted to be supplied to the disconnecting unit with this, when opposite in the power transfer path Rotational speed difference between the power source and the 2nd driven wheel side of the disconnecting unit be defined 1st threshold value or more, And it is described want demanded driving force transmission capacity be defined 2nd threshold value more than when, described control unit is controlled, so that this wants demanded driving force Transmission capacity be suppressed in as defined in inhibiting value hereinafter, and controlled so that corresponding to the rising of surface temperature of more plates Ground increases the inhibiting value.
According to the present invention, the power source relative to the disconnecting unit in the power transfer path with it is described Rotational speed difference (such as rotational speed difference of the input of the clutch as the disconnecting unit, output shaft) between 2nd driven wheel side is When more than defined threshold value, in order to protect disconnecting unit (clutch), it is necessary to the inhibition of demanded driving force transmission capacity be wanted to provide by described in The inhibiting value value of torque (inhibit) in the case where, controlled, so that the table of more plates (clutch) with the disconnecting unit The rising of face temperature, the inhibiting value also increase, therefore disconnecting caused by temperature rises can be filled up by the increase of the inhibiting value The reduction amount of the transmission capacity (torque) of unit (clutch).Therefore, it obtains following excellent effect: disconnecting list can not damaged as far as possible Realize to the torque transmission performance of first (clutch) protection of disconnecting unit (clutch).
Detailed description of the invention
Fig. 1 is the four-wheel drive for showing the hydraulic pressure control device of the distributing means for power supply with one embodiment of the present of invention The figure of the Sketch of vehicle.
Fig. 2 is the figure for being shown as the main functional modules for the 4WD-ECU that hydraulic pressure control device functions.
Fig. 3 is the figure for selectively showing control module related to the present invention.
Fig. 4 is to show the timing diagram for following action example of the invention.
Specific embodiment
Fig. 1 is the four-wheel drive vehicle for showing the hydraulic pressure control device of the distributing means for power supply with embodiments of the present invention Sketch figure.Four-wheel drive vehicle 1 shown in the figure includes the engine (drive for being equipped on front part of vehicle horizontally Dynamic source) 3；The automatic transmission 4 being integrally provided with engine 3；And for will the power from engine 3 to front-wheel W1, The power transfer path 20 of W2 and rear-wheel W3, W4 transmitting.
The output shaft (not shown) of engine 3 via automatic transmission 4, front differential mechanism (hereinafter referred to as " front differential mechanism ") 5, The drive axle 6,6 of left and right, is coupled with front-wheel W1, W2 of the left and right as main drive wheel (the 1st driving wheel).Also, engine 3 Output shaft via automatic transmission 4, front differential mechanism 5, transmission shaft 7, rear differential gear unit (hereinafter referred to as " rear differential mechanism list Member ") 8, left and right rear drive shaft 9,9, be coupled with rear-wheel W3, W4 of the left and right as secondary driving wheel (the 2nd driving wheel).
Be provided in rear differential gear unit 8 for the left and right rear drive shaft 9,9 distribute power rear differential mechanism (with It is referred to as " rear differential mechanism " down.)19；And for connecting/disconnecting from transmission shaft 7 to the power transfer path of rear differential mechanism 19 before Torque distribution clutch 10 afterwards.Front and back torque distribution clutch 10 is clutch (the i.e. more plates of oil pressure actuated of hydraulic type The disconnecting unit of friction-type), it is in power transfer path 20 for controlling to the dynamic of rear-wheel (the 2nd driving wheel) W3, W4 distribution The distributing means for power supply of power.Furthermore, comprising: supply the oil hydraulic circuit of working oil with clutch 10 for torque distribution forwards, backwards 30；Control unit, i.e. 4WD-ECU for controlling the supply oil pressure of oil hydraulic circuit 30 (is only denoted as " ECU " below.)50.ECU 50 are made of microcomputer etc..
ECU 50 by control oil hydraulic circuit 30 supply oil pressure, control by front and back torque distribution with clutch (below only Referred to as " clutch ".) 10 power distributed to rear-wheel W3, W4.It carries out front-wheel W1, W2 being set as main drive wheel, rear-wheel as a result, W3, W4 are set as the drive control of secondary driving wheel.
That is, 19 side of differential mechanism is not transmitted backward for the rotation of transmission shaft 7, engine 3 when releasing (disconnection) clutch 10 Torque is transmitted to front-wheel W1, W2, to become front-wheel drive (2WD) state.On the other hand, when being connected to clutch 10, 19 side of differential mechanism is transmitted backward for the rotation of transmission shaft 7, thus the torque of engine 3 by front-wheel W1, W2 and rear-wheel W3, W4 this two Person's distribution, to become four-wheel drive (4WD) state.ECU 50 is according to the various detection lists of the driving status for detecting vehicle The detection of first (not shown) is calculated and is supplied to rear-wheel W3, W4 power distributed and the oil pressure supplied to clutch 10 correspondingly Ying Liang, and the driving signal based on the calculated result is exported to clutch 10.The engaging force of clutch 10 is controlled as a result, Control the power distributed to rear-wheel W3, W4.
Fig. 2 shows the main functional modules in 4WD-ECU (control unit) 50.In driving torque computing module 51, root Driving torque required by vehicle 1 is calculated according to the driving conditions (torque, selection gear gear, gear of engine 3 etc.) of vehicle 1 (estimation driving force).In control torque arithmetic module 52, by distributing the control (driving of rear-wheel W1~W4 distribution forward substantially The basic distribution of power controls) module 521, LSD control module 522, upward slope control module 523 etc., it is true according to various governing factors The distribution for the driving torque that front and back wheel carries out is oriented, front and back torque distribution clutch (distributing means for power supply) 10 is calculated Command torque (wants demanded driving force transmission capacity).In instruction oil pressure computing module 53, (demanded driving force is wanted to transmit according to described instruction torque Amount) it calculates to the instruction oil pressure of clutch 10.That is, control target value computing module 531 according to described instruction torque arithmetic to from The control target value (i.e. described instruction oil pressure) of clutch 10, in addition, 2WDization module 532 calculates 2WDization when for failure when failure Control target value (i.e. described instruction oil pressure).When usual, the control target value conduct of the control calculating of target value computing module 531 Oil pressure output is instructed, but when failure, the control target value that 2WDization module 532 calculates when failure is exported as instruction oil pressure.In oil It presses in feedback control module 54, by target oil pressure computing module 541 according to the institute assigned from described instruction oil pressure computing module 53 State the target oil pressure of the deviation calculating clutch 10 of instruction oil pressure and practical oil pressure (feedback signal from oil pressure sensor 32) (i.e. oil pressure deviation) controls motor 31 according to the target oil pressure (i.e. oil pressure deviation) of the calculating by motor PWM control module 542. Motor 31 is the motor for driving oil pressure pump (not shown), which is used to supply operating oil pressure to clutch 10.Oil Pressure sensor 32 surveys the oil pressure that directional clutch 10 is supplied.In motor PWM control module 542, according to target oil pressure (i.e. oil pressure Deviation) it generates to the PWM driving instruction signal of motor 31.So that oil pressure feedback control is carried out, so that practical oil pressure follows instruction Oil pressure.In addition, be configured to as shown in the patent document 3 (No. 5607240 bulletins of Japanese Patent Publication No.), for from Clutch 10, which is supplied in the oil hydraulic circuit of oil pressure, is arranged solenoid valve (switch valve), opens or closes the solenoid valve (switch as needed Valve), thus carry out oil pressure closing control (control as follows: under electromagnetism valve closing state intermittently driving motor 31 and pressurize, Intermittently open solenoid valve under 31 state of motor and depressurize), the frequency of use of motor 31 can be reduced.
Fig. 3 is selectively to show the relevant control of the invention for including in control torque arithmetic module 52 shown in Fig. 2 The figure of element.Rotational speed difference calculation part 33 calculates the rotational speed difference between the input of clutch 10, output shaft and (or is also possible to calculate The structure of rotational speed difference between front-wheel W1, W2 and rear-wheel W3, W4, as long as in short, obtain power transfer path in relative to The structure of rotational speed difference between the power source and the 2nd driven wheel side of disconnecting unit (clutch 10)).Body speed of vehicle detection The body speed of vehicle of the detection of portion 34 vehicle 1.Clutch temp estimation module 524 is according to the finger calculated in control torque arithmetic module 52 Enable the torque (finger typically, calculated in distribution control module 521, LSD control module 522, upward slope control module 523 etc. substantially Enable the composite value of torque) and rotational speed difference calculation part 33 in the rotational speed difference etc. that calculates, absorb energy balane according to well known clutch Formula carries out the operation of the surface temperature Tc of the friction engaging member (more plates) for estimating (detection) clutch 10.
Clutch protects control module 525 in order to protect clutch 10, between the input of the clutch 10, output shaft In the case that rotational speed difference is more than defined feasible value (the 1st threshold value), in order to inhibit the phenomenon that require excessive torque, generation is used for The value that the value of command torque (wanting demanded driving force transmission capacity) to the clutch 10 is limited to the inhibition torque of specified value (is inhibited Value).Substantially, when body speed of vehicle be defined speed or more and the rotational speed difference it is bigger than defined feasible value (the 1st threshold value), And described instruction torque (wanting demanded driving force transmission capacity) is when being that specified value (the 2nd threshold value) or more such primary condition is abundant, clutch Device protection control module 525 inhibits torque value (inhibiting value) as defined in generating.Such inhibition torque was also generated in the past, but previous The value of the inhibition torque of generation is fixed value.According to the present invention, clutch protection control module 525 further contemplates clutch 10 surface temperature Tc, and be configured to, increase the value (inhibiting value) of the inhibition torque with the rising of surface temperature Tc. Specifically, it according to using clutch surface temperature and the rotational speed difference as the theoretic generation torque characteristics of parameter, calculates Variable inhibiting value so that with respect to clutch surface temperature variation prediction generation torque variation with inverse characteristic into Row variation.But inhibiting value (inhibiting torque value) can be changed for this, it will be according to the institutional spy of the oil hydraulic systems such as clutch 10 Property the limit oil pressure that determines corresponding to prescribed torque (the 3rd threshold value) be set as the upper limit (prescribed torque be than the specified value the (the 2nd Threshold value) big).This is to protect clutch 10 etc..Probably, clutch surface temperature is higher, and transmitting torque more declines, therefore institute The theoretical value for stating generation torque relatively declines, and the value of the variable inhibition torque of the calculating relatively increases.In this way, clutch The value (inhibiting value) for the inhibition torque that device protection control module 525 exports is not secured to fixed value, but with clutch 10 The rising of surface temperature Tc and the value suitably increased.Selector 526 is limited, so that by distributing control module 521 etc. substantially The command torque (wanting demanded driving force transmission capacity) of calculating is unlike the inhibiting value generated by clutch protection control module 525 (inhibiting value that can be changed corresponding with clutch surface temperature Tc) is big (that is, being controlled, so that demanded driving force transmission capacity is wanted to be suppressed Below inhibiting value).That is, the selection of selector 526 by distributing control module 521, LSD control module 522 substantially, go up a slope control mould The command torque (their composite value) of the calculatings such as block 523 simultaneously exports, and the command torque (wanting demanded driving force transmission capacity) is than the suppression In the case that torque value (inhibiting value that can be changed corresponding with clutch surface temperature Tc) processed is big, selects the inhibiting value and export (that is, being suppressed in the inhibiting value, but than demanded driving force originally smaller than the inhibiting value than the big than demanded driving force transmission capacity of the inhibiting value Transmission capacity is either directly output).In this way, exporting the command torque for inhibiting control to finish from selector 526.Inhibition control finishes finger Torque value is enabled to be provided to instruction oil pressure computing module 53 (Fig. 2).
Fig. 4 is the timing diagram for showing the action example of control module shown in Fig. 3, shows the clutch 10 in upper section portion An example of the variation of the timeliness of rotational speed difference between input, output shaft shows described instruction torque in middle portion and (inhibits control Finish command torque) timeliness variation an example, in lower section portion is shown the time of the surface temperature Tc of the clutch 10 An example of the variation of property.For example, it is assumed that rotational speed difference is in moment t1It is more than in the past defined threshold value, in moment t1Command torque is rule It is more than fixed value.In this case, to moment t1Until, instruction oil pressure computing module 53 is supplied to from control torque-calculating section 52 Command torque is not repressed common command torque, in moment t1After, it is to follow to protect control module 525 by clutch The inhibition control of the value (inhibiting value) of the inhibition torque generated finishes command torque.In Fig. 4, label A indicates the inhibition Control finishes command torque.It is not fixed value that inhibition control, which finishes command torque A, with the rising of clutch surface temperature Tc And suitably increase.But for inhibit control finish command torque A, by with according to the institutional characteristic of oil hydraulic system determine The corresponding torque (prescribed torque) of the limit oil pressure is set as upper limit value.In addition, in Fig. 4, the dotted line that is indicated with label B Curve show according to follow it is described inhibit control finish command torque A instruction oil pressure carry out oil pressure cntrol clutch 10 in An example of the torque actually generated.In this way, even if command torque A rise, because clutch surface temperature Tc rising caused by Transmitting loss of machine of torque, the torque actually generated does not rise substantially, but is able to maintain the generation torque for comparing high level.Cause This, in accordance with the invention it is possible to realize that clutch is protected with not damaging torque transmission performance as far as possible.In contrast, previous like that In the case where inhibiting torque to be maintained at fixed value, transmitting loss of machine of torque caused by the rising with clutch surface temperature is real The torque generated on border is obviously gradually reduced, and torque transmission efficiency is poor.

Claims (2)

1. a kind of hydraulic pressure control device of the distributing means for power supply in vehicle, which is characterized in that
The vehicle includes
The power of power transfer path, ultromotivity in future source is transmitted to the 1st driving wheel and the 2nd driving wheel；
Driving force distribution device comprising configuration is in the power source and the 2nd driving wheel in the power transfer path Between the more plate friction-types of oil pressure actuated disconnecting unit；And
Temperature acquisition unit obtains the surface temperature of more plates of the disconnecting unit,
The hydraulic pressure control device has control unit, and control unit acquirement wants demanded driving force to pass the distributing means for power supply The amount of passing is controlled, so that the corresponding oil pressure of demanded driving force transmission capacity will be wanted to be supplied to the disconnecting unit with this,
Described control unit is controlled, so that moving in the power transfer path relative to the described of the disconnecting unit Rotational speed difference between power source and the 2nd driven wheel side be the 1st specified value or more, it is described want demanded driving force transmission capacity be the 2nd rule When more than definite value, this want demanded driving force transmission capacity be suppressed in as defined in inhibiting value hereinafter, and controlled so that the inhibiting value As the surface temperature of more plates rises and increase.
2. the hydraulic pressure control device of distributing means for power supply according to claim 1, which is characterized in that
The vehicle has for the oil hydraulic circuit to disconnecting unit supply working oil,
Described control unit is controlled, so that stopping the inhibiting value when the inhibiting value increases to the 3rd specified value or more Increase,
3rd specified value is value corresponding with the limit oil pressure that the characteristic by the oil hydraulic circuit determines.
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